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Tightening torque for carbon post ?(6 posts)

Tightening torque for carbon post ?ixiz
Aug 1, 2001 3:45 AM
Where can i find the tightening torque for the carbon post ?

I am planning to get an alien post but the concerns of the distributor and most of the warranty or breakage post are due to overtightening the post clamp (claims USE).

Any other carbon post breakeage please inform !!!!

And USE poor warranty concerns me - 1 year
Minimal torque for postsCalvin Jones-Park Tool
Aug 1, 2001 4:12 AM
A specific torque for a seat post is not very useful. The inside diameters of the seat tube are not a tight tolerance, and the surface finish varies a great deal between frames.

It is best to use as little as you need to keep it from twisting side to side. With carbon, be sure to inspect the top of the seat tube for sharp edges and burrs, and remove any.

Snug the bolt, as low as say 30 inch pounds, and then try to twist the post with one hand. Continue to tighten until it will not move, but testing not with two hands but only one. It does not take that much torque to stop a post from twisting while you ride. If it is not twisting, it will not move down, which is what you want.
Thanks Calvinixiz
Aug 1, 2001 4:43 AM
Good suggestion Ill try that

Was concern that it slips down goin over a bump and scratch the carbon post
While you're at it Calvin, what about t'less headsets?bianchi boy
Aug 1, 2001 6:41 AM
How much torque should you use to tighten the top bolt with a threadless headset? Or, for those of us without torque wrenches, any guidelines for tightening the correct amount?
Aug 1, 2001 7:57 AM
top bolt only adds preload... the stem maintains the compression of the h/s
50-55 in lbs.... (nm)2 Phil's and a Dean
Aug 2, 2001 9:48 PM